Stove



J. E. HETTINGER.

STOVE.

APPLICATION FILED mm. 9, 1920.

L38$4L 64L Patented July 12, 1921.,

3 SHEETS-SHEET 3.

(i do unites stares Parent TULKUS n. nnr'rmenn, or cnroaeo, mnmors.

s'rovn.

Patented. July'i2, 1921..

Application filed March 9, 1920. Serial No. 3%,413.

Specification of Lettersfatent.

To (Ill-whom itmay concern: of the rails or guides 15 are such that when Be it known that I, JULIUS E. HETTIXGER, desired the inner casing maybe slipped easa citizen ofthe United States, residing at ily into or out of the outer c: sing,.guided by Chicago, in the county of Cook and State of the rails. Although the stove may becom- Illinois, have invented certain new and"v useposed. of av single inner casing, or as many 60 ful Improvements in Stoves, of which the as may be desired, for the purposes of illusfollowingis-a specification. tration' I have shown two inner casings in- This invention relates to stoves, and has. closed in the outer casing, the two inner cas forits object the production ofa stove that ings being entirely separated by a partimaybe used forall' of the ordinary purposes tion' 16. p

for which. ordinary stoves are used, and Beneath the inner casing 11, but within which is also particularly adapted for cools the outer casing, is a water chamber 1? ing orbaking where it is desired-.toheat the which, in this instance, is divided into two substance to a definite temperature, and to compartments by means of the partition 16 maintain thattemperature uniform over which extends to the bottom. of the casing 70 long periods of time; A further object is to 10." The front of the casing; 10 has overhanging flanges 20, and the casing 11 has provide a stove which may be used as a firep less cooker, or as a means for maintaining outwardly extending flanges 29', and the the high temperature of the article which is spaces between the two casings are closed being cooked for a long time after the fire by means of plates 21 and 22,. which extend 75 has been turned 0E. A. further object is to vertically on both sides of the front opening provide suitable means so that either elecof the casing 10 and across the top These tricity or gas or coal may be used for the plates form a frame which closes the space samehea tingpurposes- Other objects of the between the twocasings, and fits snugly invention will. be apparent from a: consideraagainst the flanges 20 and 29, on'the respec- 80 tion of the accompanying drawings and the tive casings, and is fixed by any suitable description thereof. means to the flanges. The openings thus Of the accompanying drawings Figure 1 formed by these plates 21 and 22 are closed is an elevation of'a stove which. embodies the normally by means of doors 23, (The right features of my invention; Fig. 2 is a crosshand door is shown removed in Fig; 1.) 85 section of the same along the line 2-2 of The doors are supported. by the hinges 25 Fig.. 1.; Fig; 3- is a detail sectional view' of fixed to the partition 16.. These doors are one of the heating; elements of the stove; arranged to fit snugly against the plates 21, Fig. 4 is an elevation of a modified form of so as to form a substantially gas tight clostove Figs, 5 and 6 are cross-sections along sure, of the casing 11. On the inner side of 90 the lines and 66 of Fig. 4', with certhe doors are sheets 26 of non-conducting tain elements added; and Figs. 7, 8' and 9- substances such as asbestos. are detail sectional views of the heater. leg Each of the: compartments of the chamand walls, respectively, Fig. 8 being along ber 17 is adapted to hold water; and the the line 88 ofFig; 1. chambers 27, formed bet-ween the walls of 95 The stove which 1' provide comprises an the two casings 10 and 11,v are substantially outer: casingIO and an inner casing 11. The hermetically sealed by the plates- 2.1 and 22', outer casing isinsulated in order to. prevent and are adapted to hold steam. these chamthe heat from. the interior o'f'the stove from. bers opening directly into thecompartments passing outwardly, and comprises a sheet of the chamber 17, it being understood that 100 ironv layer 12 on: the outside, a layer of nonthe partition 16' completely divides the conducting substance,- such as asbestos l3, steam chamber and the water chamber into and an inner-layer or sheet of suitable metal two compartments, each steam chamber, 14. The inner casing may be composed of however, communicating freely with its reany suitable" metal such as galvanized steel. spective waterchamber. 105 These two casings are spaced apart in any Within the water chambers are mounted suitable manner, as for example by means any suitable form of heating means such as of the beams 15- which are suitably supthe electric heaters 30,. which are inclosed ported. by the walls forming? the sides and in any suitable manner, sov that they will rear ofthecasinglO. The position and size not beinjured by the water, and which have no l; V *FJJW s am am ne switches 31 controlling the passage of the electric current through the conduits 32- to the heaters, each of the heaters having its own switch 31, and the master switch 33 controlling both of the heaters, or more, if more than two heaters are used. Beneath the water chamber other heating means are used, such as the gas heaters controlled by the gas valves 36 mounted in the pipe 37, all of the gas heaters being controlled by a master gas valve 38.

Beneath the heaters 36 is a casing 40 which incloses a chamber normally closed by the door 4:1, in which any articles may be placed when desired to be kept warm, while the cooking process is going on. or for any other reasons. Above the ovens 11, is another somewhat similar chamber, but which during the cooking process is much hotter than the chamber of casing 10. And below the casing 40 is a shelf 42 which may be used for any suitable purposes.

As may be implied by the foregoing description, the stove is to be operated as a steam cooking means. hen in use the articles to be cooked are placed in the casings,

' or ovens 11, on suitable shelves 45 or otherwise, and the doors are closed and tightly fastened bymeans of the latches 46. The electric heaters, or the gas heaters, as the case may be. are then set into operation, and the water is heated to the boiling temperature and the steam generated therein passes into the steam chambers 27 including the narrow chambers 47 between the partition 16 and the respective'ovens, and it is to be noted that thesteam chamber extends over the oven between the roof 48 of the casing 10 and the roof 50 of the casing 11. So that when in operation the ovens are entirely surrounded by steam except on the front sides, and these sides are insulated by means of the sheets 26 so that but little heat passes off through the doors.

-In this manner the temperature of the oven can beraised to any reasonable amount, depending upon the temperature of the steam generated. To maintain this temperature substantially uniform I provide safety valves which may be of any suitable form, such as the ordinary safety pop valves 52, which, of course, may be regulated as to operate at any desired steam pressure. By these means the temperature of the steam may be maintained substantially uniform, and danger of bursting the Walls of the steam chamber is eliminated. Also indicating thermometers may be inserted in any suitable manner. It will thus be seen that, by means of this apparatus, together with any suitable thermostatic means for controlling the supply of heat according to the tem perature of the steam, if desired, the temperature of the ovens may be raised to the desired amount, and may be maintained thus stantially uniform, so that all portions of the substances being cooked will be heated to substantially the same temperature.

For the purpose of ordinary cooking without a steam chamber. l provide on the side of the main stove an auxiliary stove 6O having any suitable form of oven or warming chamber 61 and heating means 63. The heating means may be of any suitable nature, but I have provided, for both the steam heating stove and for the auxiliary stove heating means, gas and electricity, so that either of these may be used if desired. On the auxiliary stove I provide a heating member 63 which comprises an ordinary form of gas heater 6% and an electric heater 65 both combined in the same casing. The gas heater is supplied in a usual manner b means of the gas pipe 66 and the electric heater is supplied with electricity through the conduit 67. the gas being controlled by a gas valve 68 and the electricity by a switch 70, the arms to the valve and switch being so arranged, as indicated in Fig. 2, that only one at a time can be in use. As indicated the gas valve 68 is open, but the electric switch cannot be closed so as to use the electricity. because of the interference of the handle of the gas valve. ()n the other hand when the electric switch is closed so as to use the electric burner, the switch arm is turned to the left and thus prevents the valve handle from being operated to open the gas valve.

\Vhen it is desired to use gas with this burner the gas burner 64 is placed upward; and the gas turned on and operated in the ordinary manner. lVhen it is desired to use the electric heater the burners are inverted with the electric heater uppermost. A detachable plug 100 is fixed to the electric heater, so that the heater may. be detached from the electric circuit Wires; and the gas pipe connection is made in the ordinary manner so that the burner may be readily disconnected from the feeder 66. A second gas burner is supplied for the rear portion of the auxiliary stove.

The stove 61 may be mounted on either side of the steam stove, by'disconnecting the device, and by removing the left hand legs 71 and placing them on the right hand side of the auxiliary stove, instead of on the left hand as shown, when the auxiliary stove is placed on the left hand side of the main stove. The legs 71 are removably attached to the stove as indicated in Fig. 8.

The stove which I have hereinabove described is of a more or less portable nature lessees and is adapted; to be used for household. purposes. For a more stationary type of store to be used where a large amount of cooking is to be carrietl on, l provide the stove indicated in Figs. i and 5, which in general is similar to the steam store hereinabove clescribetl, but is larger, sncl ordinarily has more compartments, anal has (loors 75 which are raised when open, being slitiably mounted in guides 7 3 and supported by cables 76 or in any suitable manner, the cables passing over pulleys anti being counterweighted. Spy glasses i2 allow the interior of the ovens to be inspected when desired. This stove is arranged with electric heaters 77 inclosetl in the water chamber 7- anti below the water climber is e suitable casing T8 which incloses a coal heater, the chamber 80 forming an ash receptacle for the coal heater; and suitable means for passing the smoke and consumed gas from the coal stove is provitlecl, such as by means of the plate 3? in the rear of the stove, having on openin; 82 for a chimney.

The electric heaters "('2' are connected to the electric wires in the conziuits 83 by means of rletachable plugs 84-, encl she beat: ers are in casings 85 in the water chambers so that the heaters may be conveniently re- 3o movecl bv removing the plates 86' wliich'are fixed to the irons walls of the water chemhers. Removable racks 88 are provitiecl having SllEElVQS for supporting the articles in be baked, anil these racks are on rollers 89 35 so that they may be conveniently rolled out of the ovens onto shelves 90 or tables. in

i this way the ovens can be very quickly emptied and filled again without having the doors open for any material length of so time, and hence but little heat is lost in the change. It will also be understood that with either type of oven, after the articles to be cooked are heated through, by turning oil the burners the heat will be retained in the ovens for a very material length of time, so that the ovens form fireiess cookers whenever clesiretl, or the articles may be kept warm in the ovens for many hours.

Some of the details of the structure of the stoves are not shown in Figs. 1, 2, i, anti 5,

but are shown in the enlarge l detail views. F Or instance the details of the walls of the oven of Figs. 4 encl 5 are shown in Fig. 9. Fixed to the sheet lei is a flange 91, which is connected to the flange "29 on the oven casing 11, with a gasket, 92, between the two flanges.

If desired, steam from any source of supply may be passed into the steam chamber by any suitable means such as a pipe 105 and a valve 106. and the heaters then may not be usetl. @ne purpose of two heating systems, such as the electric heaters and. the coal heaters. is to more completely control the cooking process, by using both heaters either simultaneously or only one alone.

I claim as my invention:

l. in a stove, a steam chember having the front. sicle open, :1 water chamber beneath and opening into said steam chamber. an oven in soil steam chamber. the walls of Sfiil oven being spaced from the walls of said steam chamber, the front wall of saitl even being nearly flush with the from. of said steam chamber, means for sealing the space between the front of said oven and the front edges of said steam chamber, an electric heater mounted in said water chamber, and a gas heater mounted beneath saicl writer chamber.

2. In a store, a casing, a gas burner and electric wires in said casing, snoi means for passing gas to said burner and electric energy to said wires, said casing being arranged so as to be inverted.

in testimony whereof, ll hereunto set my hand.

JULIUS E. HETTINGER. 

